Question about Dell 2300MP Multimedia Projector

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Dell 2300 MP Projector: Wavy lines on screen

My projector recently started diaplaying wavy segments moving up the screen from the bottom to the top. The resolution seems to be getting poor as well.

Please, please help

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Hi and welcome to FixYa,

Initially, your description indicates that AC hum/component is superimposing on the video signal. This could be brought about by:

  • a faulty power supply capacitor;
  • loose shielding/grounding wire of the video cable;
  • electrical interference from nearby other electrical devices such as wireless phone, lamps with electronic ballast, lamp dimmer, or even the devices attached to the projector such as the DVD or computer or receiver.
Things you can try:
  • use a different outlet;
  • use a filtered power strip or an AVR similar to those used by desktop computer but with the power rating to the requirements of the projector;
  • change the signal cables;
  • inspect the internal circuitry of the projector with particular attention to the large capacitors of the power supply.
Another possibility worth mentioning is low AC voltage from the mains. Of course the best would be to perform voltage measurements and signal tracing with use of specialized equipment such as a scope while referencing a Service Manual.

Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 21, 2008

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Hope this be of some help/idea. Good luck and kind regards.

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